The author implies that there is cause for concern if consumers with limited incomes buy organic foods instead of conventionally grown foods because _______.

Mark the letter A, B, C, or D on your answer sheet to indicate the word that differs from the other three in the position of primary stress in each of the following questions.

When searching for the buried treasure, we noticed a strange inhumane sound coming from a distant place, warning about an animal lurking somewhere.

I bought my _______ camera from a friend of mine.

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks.

(26) _______ in technology have made a lot of changes to our everyday lifestyles, but one of the biggest has got to be how we read books. Since the invention of the e-book, there has been a significant change to our reading habits. Given the choice between taking a couple of heavy paperbacks on holiday or an e- book device like a Kindle, most of us, including our parents and grandparents, would unsurprisingly opt (27) ______ Kindle.

But what would our lives be like with no books at all? It's a (28) _______ question. Some educational specialists are making predictions that in the future we won't even see books in classrooms - everything will be done online! (29) _______ of the idea of getting rid of books say that there will always be a need for paper-based versions of materials. (30) _______, to be realistic, we have to accept that there is a remote chance that in a decade's time, schools and classrooms will be book-free! What do you think of that?

Mark the letter A, B, C, or D on your answer sheet to indicate the word whose underlined part differs from the other three in pronunciation in each of the following questions.

_______,she spent nearly an hour walking all around the neighborhood looking for her car.

In ______ 1950s, many people moved from _______ West Indies to _______ England because their life was so hard there.

The more she practices speaking English, _______ she becomes.

Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions.

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions.

In this modern world where closed-circuit television (CCTV) cameras are everywhere and smartphones are in every pocket, the routine filming of everyday life is becoming pervasive. A number of countries are rolling out body cams for police officers; other public-facing agencies such as schools, councils and hospitals are also experimenting with cameras for their employees. Private citizens are getting in on the act too: cyclists increasingly wear headcams as a deterrent to aggressive drivers. As camera technology gets smaller and cheaper, it isn't to envisage a future where we're all filming everything all the time, in every direction.

Would that be a good thing? There are some obvious potential upsides. If people know they are on camera, especially when at work or using public services, they are surely less likely to misbehave. The available evidence suggests that it discourages behaviours such as vandalism. Another upside is that it would be harder to get away with crimes or to evade blame for accidents.

But a world on camera could have subtle negative effects. The deluge of data we pour into the hands of Google, Facebook and others has already proved a mixed blessing. Those companies would no doubt be willing to upload and curate our body-cam data for free, but at what cost to privacy and freedom of choice?

Body-cam data could also create a legal minefield. Disputes over the veracity and interpretation of police footage have already surfaced. Eventually, events not caught on camera could be treated as if they didn't happen. Alternatively, footage could be faked or doctored to dodge blame or incriminate others.

Of course, there's always the argument that if you're not doing anything wrong, you have nothing to fear. But most people have done something embarrassing, or even illegal, that they regret and would prefer they hadn't been caught on film. People already censor their social media feeds - or avoid doing anything incriminating in public - for fear of damaging their reputation. Would ubiquitous body cams have a further chilling effect on our freedom?

The always-on-camera world could even threaten some of the attributes that make us human. We are natural gossips and backbiters, and while those might not be desirable behaviours, they oil the wheels of our social interactions. Once people assume they are being filmed, they are likely to clam up.

The argument in relation to body-cam ownership is a bit like that for guns: once you go past a critical threshold, almost everyone will feel they need one as an insurance policy. We are nowhere near that point yet but we should think hard about whether we really want to say "lights, body cam, action."